Authors: M Surso, Institute of Ecological Problems of the North, Ural Branch of Russian Academy of Sciences, O Barzut, A Zaitsev, E Pinaevskaya, The Northern (Arctic) Federal University named after M.V. Lomonosov, Institute of Ecological Problems of the North, Ural Branch of Russian Academy of Sciences, The Northern (Arctic) Federal University named after M.V. Lomonosov